MOPHIE Juice Pack Air iPhone 4 Battery Case

Product code: 057448

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  • Available to Order Online & Collect in Store from next day  

Product features

  • Data cable
  • Acoustic sound enhancement
Product information
With the Mophie  Juice Pack Air iPhone 4 Battery Case you can add extra power to your iPhone while protecting it against knocks and bumps.

Power boost

The Juice Pack Air contains a rechargeable battery in the case, which can increase the life of your iPhone. With a possible extra 12 hours talk time on 2G and six hours on 3G, you can keep on using your device with no worry about running out of juice. This also equates to an additional 36 hours of audio playback and nine hours of video playback.

iPhone protection

Not only will the Juice Pack Air maximise the time you can use your device, it will also keep it out of harm's way and will help to stop damage caused by accidental whacks and thumps.

Perfect sound

The case has been designed to enhance your audio experience so you'll get crystal clear sound.

Increase your iPhone's life with the Mophie  Juice Pack Air iPhone 4 Battery Case.

Technical specifications for MOPHIE Juice Pack Air iPhone 4 Battery Case

Device - iPhone 4
- iPhone 4s
Other features - Acoustic Sound Enhancement
- LED status indicator
Accessories included - USB cable for charge/sync
- User’s manual
Dimensions 128.7 x 63.8 x 17.3 mm (H x W x D)
Manufacturer’s guarantee 1 year limited warranty
Customer reviews

MOPHIE iPhone 4/4S Juice Pack Air Battery Case reviews verified by Reevoo

31 reviews

Reviews from: Sort by:
(9.0 out of 10)
Ease of use
Value for money
Overall rating
Scores 9.0 out of 10 based on 31 reviews
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(8 out of 10)


Works as advertised - no learning curve
Adds bulk/weight
Confirmed purchase: 11 December 2014
Published on: 12 January 2015
(9 out of 10)


Cardiff GB Tech/gadget geek
Great extra battery life (whether in an emergency or just to extend it on a busy day).
Not too bulky or heavy.
You can charge the iPhone and the battery case via micro USB at the same time.
Very minimalist and no fuss.
You can still sync/transfer data using micro USB when the case is still on.
The silver ridge around the edge is plastic and the on/off switch and the small slot for the micro USB charging cable has a little wear after four months, but it is reasonable.
Confirmed purchase: 30 January 2014
Published on: 20 April 2014
(9 out of 10)


Portsmouth GB High Level Procurement Professional
Really useful as the 4s battery is poor.
Be careful taking it off your phone as it would be possible to bend the smaller section- it is a rather snug fit.
Confirmed purchase: 16 January 2014
Published on: 14 February 2014
(10 out of 10)


London GB First time Currys user
Looks great Feels great Adds extra 100% to battery life Good deal online
Does make phone heavier
Confirmed purchase: 16 January 2014
Published on: 13 February 2014
(9 out of 10)


Easy to use, gives a good charge and quick to charge too. This is my second one and it's slightly improved on the earlier model, which did go faulty with 2 years constant use and a few drops on the floor ... my phone was protected though!
It is slightly heavy and bulky but I'm used to carrying it about and don't really notice it anymore. I think it's worth that for the battery life extension it provides. I don't need to worry about my phone running out of juice.
Confirmed purchase: 07 January 2014
Published on: 05 February 2014
Delivery, Order & Collect and Services

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Same day delivery (£9.99): exclusively for selected addresses in Greater London. Simply place your order before 9:30am Monday-Friday and receive it that evening between 6:30pm and 10:30pm.

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Reserve and Collect

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Pay and Collect

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Your item will be sent from our warehouse to the store for free and will be available to collect from 5pm on your chosen day of delivery, including next day. Your product will be available to collect for 28 days after delivery.

  • Order within for next day delivery
  • FREE delivery available
  • Available to Order Online & Collect in Store from next day  
MOPHIE Juice Pack Air iPhone 4 Battery Case